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When your build demands a clean 90-degree direction change without slipping, wobbling, or wearing out prematurely, a poorly matched gear set becomes the weakest link in the entire drivetrain. Engineers, robotics builders, and serious DIY makers who need repeatable, low-backlash performance rely on correctly specified bevel gears — not generic substitutes. These Module 0.8 stainless steel miter gears are designed for exactly that use case.
Each gear is machined from stainless steel and follows the Module 0.8 standard, with a 90° 1:1 miter configuration. Available tooth counts are 20T, 25T, and 30T, with bore sizes ranging from 4 mm (0.157 in) to 12 mm (0.472 in). The pitch diameter ranges from approximately 16 mm (0.63 in) for the 20T up to 24 mm (0.94 in) for the 30T. Sold individually or in matched pairs of 2 pieces.
Typical applications include compact robotic joint drives requiring a 90° axis change, CNC machine auxiliary axes and indexing heads, custom gearbox builds for RC vehicles and automation rigs, and DIY power transmission projects where a module 0.8 miter gear set must fit a tight envelope. The stainless steel construction makes these gears well-suited for environments where mild corrosion resistance is needed alongside mechanical strength.
Machined from stainless steel for solid mechanical strength and resistance to light moisture and oxidation — suitable for indoor automation and light-duty outdoor enclosures.
Conforms to the Module 0.8 gear standard, ensuring accurate tooth geometry and smooth meshing with any compatible M0.8 bevel gear counterpart.
True 1:1 ratio at a 90-degree shaft angle — ideal for changing drive direction without altering speed or torque in compact mechanical assemblies.
Three tooth count options let you match the gear to your pitch diameter requirement and available space, from the compact 20-tooth up to the larger 30-tooth variant.
Bore sizes from 4 mm to 12 mm (0.157 in – 0.472 in) cover the most common small-shaft diameters used in robotics, CNC, and DIY drive systems.
Order 1 pcs for a replacement or test fit, or select 2 pcs to receive a matched miter gear pair ready for direct installation into a 90° drive assembly.
| Gear Standard (Module) | Module 0.8 (M0.8) |
|---|---|
| Shaft Angle | 90° |
| Gear Ratio | 1:1 (Miter) |
| Available Tooth Counts | 20T / 25T / 30T |
| Pitch Diameter | 20T: ~16 mm (0.63 in) | 25T: ~20 mm (0.79 in) | 30T: ~24 mm (0.94 in) |
| Bore Size Options | 4 mm / 5 mm / 6 mm / 8 mm / 10 mm / 12 mm |
| Material | Stainless Steel |
| Finish / Surface | See variant options |
| Face Width | See variant options |
| Hub Diameter | See variant options |
| Overall Height | See variant options |
| Set Screw | See variant options |
| Quantity per Order | 1 pcs or 2 pcs (select above) |
All three options are Module 0.8 with a 1:1 ratio, so the speed and torque relationship is the same. The difference is pitch diameter: 20T gives the smallest diameter (~16 mm), 25T is mid-size (~20 mm), and 30T is the largest (~24 mm). Choose based on the available space in your assembly and the center distance between your two shafts.
Select the bore size that matches your shaft diameter exactly. Available options are 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm. If your shaft is metric, match it directly. If your shaft is imperial, convert first (e.g., 1/4 in ≈ 6.35 mm — in that case, a 6 mm bore would be too tight; contact us to confirm fit).
Stainless steel provides good tensile strength for small-module gears. Module 0.8 gears are designed for light-to-medium duty applications such as robotics joints, small CNC axes, and instrumentation drives. For heavy industrial torque loads, a larger module gear would be more appropriate. If you are unsure whether these suit your torque requirement, contact us with your application details.
Stainless steel offers meaningful corrosion resistance compared to plain carbon steel, making these gears suitable for indoor environments with moisture exposure, light washdown conditions, or enclosures with condensation. They are not rated for continuous submersion or highly corrosive chemical environments.
Yes — a miter gear drive requires two matched gears (one on each shaft). If you select the "2 pcs" option, you receive a matched pair of identical tooth-count gears ready to mesh at 90°. If you select "1 pcs," you receive a single gear, which is useful for replacing one half of an existing pair or for prototyping.
Yes, provided the mating gear is also Module 0.8 with the same tooth count and a matching 90° pressure angle. Module is an international standard, so these gears will mesh correctly with any conforming M0.8 bevel gear regardless of brand. Always verify tooth count and pressure angle before mixing gear sets.
Set screw availability depends on the specific variant. Please refer to the product images or contact us to confirm whether your selected bore size includes a set screw hole. For high-torque or precision applications, a keyed shaft and matching keyway bore is recommended over a set screw alone.
